How Does Hebrew Calendar Work. According to the biblical book of exodus, it’s precisely when the israelite slaves are about to go free that we see the first appearance of the. In this case, this means the hebrew calendar is dictated solely by the moon (thus lunar) except it also.

This means that the length of jewish months are determined by the cycles of the moon. The hebrew calendar, also known as the jewish calendar, is a unique system that has been used by jewish communities for thousands of years, putting most of 2023 as the year 5783.